NUMBER OF PRODUCTIVE WELLS (AT DECEMBER 31)

 

 

2011

2010

2009

 

Oil

Gas

Oil

Gas

Oil

Gas

 

Gross

Net

Gross

Net

Gross

Net

Gross

Net

Gross

Net

Gross

Net

[A]

The number of productive wells with multiple completions (more than one formation producing into the same well bore) at December 31, 2011, was 1,997 gross (739 net); 2010: 2,011 gross (779 net).

Europe

1,454

427

1,317

430

1,464

412

1,341

443

1,544

423

1,343

446

Asia

7,361

2,352

289

162

7,236

2,382

298

164

6,751

2,250

207

99

Oceania

48

5

557

212

39

4

608

211

39

6

566

122

Africa

883

357

98

65

1,180

447

89

59

1,150

415

80

53

North America – USA

14,993

7,607

3,449

2,222

15,322

7,771

3,884

2,457

15,425

7,835

1,640

1,170

North America – Canada

476

406

1,115

906

433

370

1,007

764

446

382

947

713

South America

67

33

7

2

73

34

6

1

72

32

12

5

Total

25,282

11,187

6,832

3,999

25,747

11,420

7,233

4,099

25,427

11,343

4,795

2,608